Low Rate CSI Feedback and Capacity Analysis in Multiuser-MIMO-OFDM System

Zhang Yi-heng; Cui Qi-mei; Tao Xiao-feng

doi:10.3724/SP.J.1146.2008.00868

Volume 31 Issue 9

Dec. 2010

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Article Navigation > Journal of Electronics & Information Technology > 2009 > 31(9): 2188-2192

Zhang Yi-heng, Cui Qi-mei, Tao Xiao-feng. Low Rate CSI Feedback and Capacity Analysis in Multiuser-MIMO-OFDM System[J]. Journal of Electronics & Information Technology, 2009, 31(9): 2188-2192. doi: 10.3724/SP.J.1146.2008.00868

Citation:

Zhang Yi-heng, Cui Qi-mei, Tao Xiao-feng. Low Rate CSI Feedback and Capacity Analysis in Multiuser-MIMO-OFDM System[J]. Journal of Electronics & Information Technology, 2009, 31(9): 2188-2192. doi: 10.3724/SP.J.1146.2008.00868

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Low Rate CSI Feedback and Capacity Analysis in Multiuser-MIMO-OFDM System

doi: 10.3724/SP.J.1146.2008.00868

Zhang Yi-heng^{①②;崔琪楣},
Cui Qi-mei,
Tao Xiao-feng

Received Date: 2008-07-08
Rev Recd Date: 2009-05-26
Publish Date: 2009-09-19

Abstract

Abstract

A low rate CSI (Channel State Information) feedback scheme based on linear prediction is proposed for closed-loop multi-user MIMO-OFDM systems. The subcarriers in OFDM system are divided into several sub-bands according to the coherence bandwidth. MS (Mobile Station) predicts CSI of each sub-band, then feedbacks the quantized and coded prediction error to BS (Base Station). BS recovers CSI from feedback information with the same linear predictor, and performs multi-user spatial multiplexing by zero-forcing beamforming with recovered CSI. The downlink capacities are analyzed in theory, where water-filling power allocation method is assumed. Numerical simulations verify that, BS can recover CSI precisely even if the feedback data (real part or imaginary part) is quantized only by one bit. Compared with the 3GPP LTEs feedback scheme based on codebook, the proposed scheme can suppress CCI better, and achieve much larger capacity. Meanwhile the feedback payload is same as that of 3GPP LTEs scheme.

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References(1)

References

Love D J, Heath R W, and Strohmer T. Grassmannianbeamforming for multiple-input multiple-output wireless systems[J].IEEE Transactions on Information Theory.2003, 49(10):2735-2747[2]Spencer Q H, Swindlehurst A L, and Haardt M. Zero-forcingmethods for downlink spatial multiplexing in multiuserMIMO channels [J].IEEE Transactions on Signal Processing.2004, 52(2):461-471[3]Sadek M, Tarighat A, and Sayed A H. A leakage-basedprecoding scheme for downlink multi-user MIMO channels [J].IEEE Transactions on Wireless Communications.2007, 6(5):1711-1721[4][4] 3GPP TS 36.211 V8.2.0. Evolved Universal Terrestrial RadioAccess (E-UTRA); Physical channels and modulation(Release 8) [S]. 2008.[5]周炯槃, 丁晓明. 信源编码原理[M]. 第一版, 北京: 人民邮电出社, 1996: 183-187.Zhou Jiong-pan and Ding Xiao-ming. Source Coding Theory[M]. V1, Beijng: Posts and Telecommunications NewsPublisher, 1996: 183-187.[6]Simon H. Adaptive filter theory [M]. Fourth Edition, Upperhaddle river, New Gerhey, USA: Prentice Hall, 2002: 148-155.[7]Vucetic B and Yuan Jin-hong. Space-Time Coding [M]. NewYork.[J].John WileySons.2003,:-[8][8] 3GPP TR 25.996 V6.1.0. Spatial Channel Model for MultipleInput Multiple Output (MIMO) Simulations (Release 8) [S].2005.[9][9] 3GPP TS 36.213 V8.2.0. Evolved Universal Terrestrial RadioAccess (E-UTRA); Physical layer procedures (Release 8) [S].2007.[10][10] 3GPP TS 36.201 V8.2.0. Evolved Universal Terrestrial RadioAccess (E-UTRA); LTE Physical Layer - General Description(Release 8) [S]. 2007.

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